Lock-spindle lock



.Mar. 27, 1923. 1,449,967.

1. A. BELFORD.

LOCK SPINDLE LOCK. FILED MAY'I. 1921.

J14 Bayard Patented Mar. 27, 1923.

UNITED STATES JAMES A. BELFORD, 0F DAYTON, OHIO.

LOCK-SPINDLE LOCK.

Application filed May 7, 1921.

T 0 all whom it may concern:

Be it known that 1, JAMES A. BELFORD, citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Lock-Spindle Locks, of which the following is a specification.

This invention relates to an improved lock spindle lock, being particularly designed for use in connection with door locks and has as one of its'principal objects to provide a neat, simple and convenient device of this character which may be easily operated for locking the spindle of a door lock against rotation and thereby lock the door closed through the medium of the latch of the door lock.

The invention has as a further object to provide a device which may be permanently attached to a door to cooperate with the lock thereof and wherein the presence of the device upon the door will not hamper the normal operation of the look.

And the invention has as a still further object to provide a device which may be readily employed in conjunction with sub- ,stantially any ordinary door lock.

Other and incidental objects will appear hereinafter.

In the drawing:

Figure 1 is a perspective view showing my improved device in connection with a door and lock of conventional design,

Figure 2 is a fragmentary vertical sectional view more particularly illustrating the structural details of the device,

Figure 3 is a detail elevation showing the base plate of the device,

Figure 4 is a detail elevation looking at the inner side of the cap of the device, and

Figure 5 is a detail perspective showing the locking bolt of the device.

Referring now more particularly to the drawing, I have, for convenience, shown my improved device in connection with a door and door lock of conventional design. The door is indicated at 10 and set into the door is the usual lock 11 having a latch 12. Associated with the latch is the spindle 13 of the lock extending through the door and equipped at its ends with the customary knobs 14 by which the spindle may be rotated for retracting the latch, the latch being, of course, spring pressed to normally project in active position at the outer edge Serial No. 467,776.

of the lock so that when the door is closed, the latch will automatically operate to secure the door in closed position.

Coming now more particularly to the subject of the present invention, I employ an annular base 15 provided centrally, as shown in detail in Figure 3, with a square opening 16 to freely receive the spindle 13 of the door lock therethrough and this base plate is, as particularly shown in Figure 2, secured against the inner side of the door by a plu rality of screws or other suitable fastening devices 17. Rising from the base plate is an annular boss or flange 18 and formed in said boss at its outer side is an annular groove 19.

Rotatably fitting over the base plate mating therewith is a cap 20 preferably provided near its inner end with a knurled band so that said cap may be readily r0- tated manually and threaded through the cap at diametrie points are pins 21 provided at their inner ends with reduced smooth terminals freely engaging in the groove 19 of the base plate 15 rotatively connecting the cap with the base plate. Integrally formed on the cap axially thereof is a depending hub sleeve 22 and rising from the cap at the outer end of said sleeve is a flanged neck 23 freely receiving the spindle 13 of the door lock therethrough and rotatably seating the shank of the adjacent knob 14 of the lock. Threaded into the sleeve 22 is a locking bolt 24 provided with a square opening therethrough to snugly receive the spindle 13 of the door lock, the bolt being, however, slidable along the spindle, and formed on said bolt at its inner end is, as shown in detail in Figure 5, a square boss or terminal 25 adapted to snu ly but removably fit through the opening 16 of the base plate.

As will now be readily understood in view of the preceding description, when the spindle 13 of the door lock is rotated for operating the latch 12, the bolt 24 will turn with the spindle so that the presence of the device upon the door will not hinder the normal operation of the door lock. How ever, when the spindle is at rest, the bolt 24 will be held'against rotation by the spindle. Consequently, the cap 20 may then be rotated in one direction upon the base plate 15 for advancing the bolt forwardly along the spindle to engage the terminal 25 of the bolt in the opening 16 of the base plate. The terminal of the bolt will then coact with the base plate for locking the bolt against rotation and accordingly locking the spindle against rotation so that the spindle cannot then be operated for retracting the latch 12. Thus, when the door is closed,the door may be easily locked in closed position. To retract the bolt 24, the cap 20 is simply rotated in the opposite direction when the spindle will be again freed. I accordingly provide a particularly simple and'eifective device for the purpose set forth and, as will now be seen, a device which may be readily employed in connection with door locks of substantially any conventional design.

Having thus described the invention, what is claimed as new is:

1. The combination with a rotatable lock spindle, of means fixed against rotation with respect to the spindle, means fitting the spindle and slidable longitudinally thereon to cooperate with the first means for locking the spindle against rotation, and means housing the second means and operable to slidably shift such means.

2. A device of the character described ineluding a base plate, an operating member rotatably connected thereto, and a bolt carried by said member housed therein and adapted to coact with a lock spindle, the member being operable independently of the spindle for shifting the bolt along the spindle to coact with the base plate for looking the spindle against rotation.

3. A device of the character described in cluding a base plate, an operating member rotatably connected thereto, and a bolt hav ing threaded engagement with said member housed therein and formed to receive a lock spindle therethrough to turn with the spindle, the spindle normally holding the bolt against rotation whereby said member may be rotated independently of the spindle to shift the boltalong the spindle to coact with the base plate for locking the spindle against rotation.

4:. A device of the character described including a base plate, a cap rotatable thereon and'provided with a hub sleeve, and a bolt threaded into said sleeve housed by the cap and provided with an opening therethrough to receive a lock spindle to turn with the spindle, the spindle normally holding the bolt against rotation whereby the cap may be turned independently of the spindle to shift the bolt along the spindle to coact with the base plate for locking the spindle against rotation.

5. The combination with a closure,-a lock carried thereby having a spindle, and a knob on said spindle, of locking means independent of the knob positioned between the closure and the knob and shiftable longitudinally of the spindle to operatively coact between the spindle and the closure for securing the spindle against rotation.

6. The combination with a closure, a lock carried thereby having a spindle, and a knob on said spindle, of a. plate secured to the closure, and means independent of the knob mounted on the spindle to turn therewith but shiftable along the spindle to engage said plate for securing the spindle against rotation.

7. The combination with a closure, a lock carried thereby having a spindle, and a knob on said spindle, of a plate secured to the closure, means independent of the knob mounted on the spindle to turn therewith but shiftable along the spindle to engage said plate for securing the spindle against rotation, and means mounted upon the plate to coact with the first means for shifting the first means.

8. A spindle lock including a base plate having an upstanding flange, a cap fitting over thebase plate, means coacting between the cap and said flange rotatably connecting the cap with the plate, the cap being formed with a hub sleeve extending toward the plate within the lines of the flange, and a bolt threaded into said sleeve and formed to slidably fit a lock spindle, the cap being ro- JAMES A. 'BELFORD. [L.'S.] 

